MAX706SESA-TUDI

MAX706P/R/S/T, MAX706AP/AR/AS/AT, and MAX708R/S/T microprocessor supervisory circuits reduce the complexity and component count required to monitor +3V supply levels in +3V to +5V microprocessor systems. These devices significantly improve system reliability and accuracy compared to using discrete ICs or discrete components. The MAX706P/R/S/T and MAX706AP/AR/AS/AT supervisory circuits provide four functions: 1) A reset output during power-up, power-down, and undervoltage conditions. 2) An independent watchdog output that goes low if the watchdog input is not toggled within 1.6 seconds. 3) A 1.25V threshold detector for power-fail warning, low-battery detection, or monitoring power supplies other than the main supply. 4) An active-low manual reset input. The difference between MAX706R/AR, MAX706S/AS, and MAX706T/AT lies in the reset threshold voltage levels: 2.63V, 2.93V, and 3.08V, respectively. All have an active-low reset output. The MAX706P/AP is identical to the MAX706R/AR except that the reset output is active-high. For the MAX706AP/AR/AS/AT, the watchdog timer function is disabled when the WDI input is left floating or connected to the high-impedance state of a low-leakage three-state output. The MAX708R/S/T provide the same functions as the MAX706R/S/T and MAX706AR/AS/AT, but without a watchdog timer. Instead, they provide both RESET and RESET outputs simultaneously. As with the MAX706, devices with R, S, and T suffixes have reset thresholds of 2.63V, 2.93V, and 3.08V, respectively.